The
southbound span of the Interstate Bridge closed to traffic Tuesday night – and
maintenance crews are scrambling to have it reopen before the Wednesday morning
commute, said an Oregon Department of Transportation spokesman.

A
roller in the span's 55-year-old lift mechanism came off track while opening
for river traffic, said Don Hamilton, an ODOT spokesman. Southbound travelers
along Interstate 5 in Washington can take the I-205 Bridge as an alternate
route.